MCP6041-I/MSG Microchip Technology, MCP6041-I/MSG Datasheet - Page 15

• Manufacturer Part Number: MCP6041-I/MSG
• Description: SINGLE 1.6V 10 KHZ OP, -40C to +85C, 8-MSOP , TUBE
• Manufacturer: Microchip Technology

4.9
4.9.1
The MCP6041/2/3/4 op amps’ Common Mode Input
Range, which goes 0.3V beyond both supply rails,
supports their use in high side and low side battery
current sensing applications. The very low quiescent
current (0.6 µA, typical) help prolong battery life, and
the rail-to-rail output supports detection low currents.
Figure 4-7
circuit. The 10Ω resistor is sized to minimize power
losses. The battery current (I
resistor causes its top terminal to be more negative
than the bottom terminal. This keeps the common
mode input voltage of the op amp below V
within its allowed range. The output of the op amp will
also be below V
Voltage Swing specification.
FIGURE 4-7:
Sensor.
© 2008 Microchip Technology Inc.
.
1.4V
6.0V
to
Application Circuits
shows a high side battery current sensor
BATTERY CURRENT SENSING
I
DD
I
DD
DD
100 kΩ
, which is within its Maximum Output
10Ω
=
----------------------------------------- -
(
High Side Battery Current
10 V/V
V
DD
–
)
MCP604X
V
⋅
DD
OUT
(
10
) through the 10Ω
Ω
)
1 MΩ
DD
, which is
V
V
OUT
DD
4.9.2
The MCP6041/2/3/4 op amp is well suited for
conditioning
applications.
mentation amplifier, using the MCP6042, that works
well for applications requiring rejection of common
mode noise at higher gains. The reference voltage
(V
supply applications, V
FIGURE 4-8:
Instrumentation Amplifier.
.
V
REF
REF
V
V
) is supplied by a low impedance source. In single
2
1
V
OUT
R
1
INSTRUMENTATION AMPLIFIER
Figure 4-8
=
sensor
MCP6041/2/3/4
(
V
MCP6042
1
R
–
2
V
REF
½
Two Op Amp
2
R
signals
) 1
shows a two op amp instru-
⎛
⎝
G
is typically V
+
R
R
----- -
R
2
1
2
+
in
2R
-------- -
R
DS21669C-page 15
G
1
battery-powered
⎞
⎠
MCP6042
DD
R
+
1
/2.
V
½
REF
V
OUT